173100081 has 16 divisors (see below), whose sum is σ = 287751168. Its totient is φ = 89922000.

The previous prime is 173100079. The next prime is 173100119. The reversal of 173100081 is 180001371.

It is not a de Polignac number, because 173100081 - 2¹ = 173100079 is a prime.

It is a super-2 number, since 2×173100081² = 59927276084413122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (173100281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374445 + ... + 374906.

It is an arithmetic number, because the mean of its divisors is an integer number (17984448).

Almost surely, 2^173100081 is an apocalyptic number.

173100081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

173100081 is a deficient number, since it is larger than the sum of its proper divisors (114651087).

173100081 is a wasteful number, since it uses less digits than its factorization.

173100081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749372.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 173100081 is about 13156.7503966595. The cubic root of 173100081 is about 557.3128931653.

The spelling of 173100081 in words is "one hundred seventy-three million, one hundred thousand, eighty-one".